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  • 1
    Electronic Resource
    Electronic Resource
    Nucleon structure functions from relativistic constituent quarks
    Amsterdam : Elsevier
    Physics Letters B 334 (1994), S. 275-280 
    Details
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0370-2693(94)90687-4
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Relativistic deuteron structure function
    Amsterdam : Elsevier
    Physics Letters B 335 (1994), S. 11-16 
    Details
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0370-2693(94)91550-4
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Nuclear shadowing at small x and Q^2
    Amsterdam : Elsevier
    Physics Letters B 317 (1993), S. 437-442 
    Details
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0370-2693(93)91021-E
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  • 4
    Electronic Resource
    Electronic Resource
    Quark-hadron duality and the nuclear EMC effect (2002)
    Springer
    The European physical journal 14 (2002), S. 105-112 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 13.60.Hb Total and inclusive cross-sections (including deep-inelastic processes) – 13.40.Gp Electromagnetic form factors – 14.20.Dh Protons and neutrons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Recent data on polarized proton knockout reactions off 4He nuclei suggest a small but nonzero modification of proton electromagnetic form factors in medium. Using model-independent relations derived on the basis of quark-hadron duality, we relate the medium modification of the form factors to the modification at large x of the deep-inelastic structure function of a bound proton. This places strong constraints on models of the nuclear EMC effect which assume a large deformation of the intrinsic structure of the nucleon in medium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epja/iepja1323
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  • 5
    Electronic Resource
    Electronic Resource
    Charm in the nucleon (1999)
    Springer
    The European physical journal 11 (1999), S. 673-683 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. A next-to-leading order analysis of inelastic electroproduction of charm is performed using an interpolating scheme which maps smoothly onto massless QCD evolution at large $Q^2$ and photon–gluon fusion at small $Q^2$ . In contrast with earlier analyses, this scheme allows the inclusion of quark and target mass effects and heavy quark thresholds, as well as possible non-perturbative, or intrinsic, charm contributions. We find no conclusive evidence in favor of an intrinsic charm component in the nucleon, although several data points which disagree with perturbative QCD expectations will need to be checked by future experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100529900189
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  • 6
    Electronic Resource
    Electronic Resource
    Proton production bias in neutrino-hydrogen interactions (1992)
    Springer
    The European physical journal 342 (1992), S. 215-221 
    Details
    ISSN: 1434-601X
    Keywords: 13.87.Fh ; 13.87.Ce ; 13.15.Dk
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Recent bubble chamber experiments have produced what at first appeared to be a curious dependence of (anti) neutrino-nucleus and (anti)neutrino-proton semiinclusive structure functions on the number of slow protons present at the interaction vertex. Some authors have suggested that this effect is in fact related to the EMC effect. We show, however, that the difference between the differential cross sections for events with slow protons (stubs) and for those without can be attributed to the fragmentation bias inherent to deep inelastic scattering. For the ratio of normalizedx-distributions for stub-containing to stub-free events we find quantitative agreement between our model and the data for the small-x region (x 〈0.25), and can reproduce the larger-x data after making corrections for possible uncertainties associated with the determination of final state hadron momenta. Our results also agree very well with the total fraction of proton-containing events with momentum below 350 and 600 MeV. We also examine a model for the target fragmentation into protons in which we consider the extreme case where the nucleon sea is dominated by pions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01288472
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  • 7
    Electronic Resource
    Electronic Resource
    Gottfried sum rule and the shape ofF 2 ⌍ -F 2 ⌍ (1991)
    Springer
    The European physical journal 340 (1991), S. 85-92 
    Details
    ISSN: 1434-601X
    Keywords: 11.50.Li ; 11.30.Jw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The recent experimental determination of the Gottfried sum rule of deep inelastic scattering provides strong evidence that SU(2) flavor symmetry is broken by the sea quark distributions of the nucleon. Two mechanisms have been suggested to explain the data: Pauli blocking and non-perturbative contributions to the sea arising from the pion cloud surrounding the nucleon. We investigate the effects of these two mechanisms on several standard parametrizations of the quark distribution functions and find that each mechanism has different effects on the shapes of these distribution functions. The best agreement between the experimental data and the modified quark distributions occurs when both mechanisms are taken into account using a softπNN form factor and a small Pauli correction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01284484
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  • 8
    Electronic Resource
    Electronic Resource
    Meson cloud of the nucleon in polarized semi-inclusive deep-inelastic scattering (1995)
    Springer
    The European physical journal 353 (1995), S. 311-319 
    Details
    ISSN: 1434-601X
    Keywords: 13.60.Hb ; 13.87.Fh ; 13.88.+e
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We investigate the possibility of identifying an explicit pionic component of the nucleon through measurements of polarizedΔ ++ baryon fragments produced in deep-inelastic leptoproduction off polarized protons, which may help to identify the physical mechanism responsible for the breaking of the Gottfried sum rule. The pion-exchange model predicts highly correlated polarizations of theΔ ++ and target proton, in marked contrast with the competing diquark fragmentation process. Measurement of asymmetries in polarizedΛ production may also reveal the presence of a kaon cloud in the nucleon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01292337
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    Paper (German National Licenses)
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